156661916 has 12 divisors (see below), whose sum is σ = 288587880. Its totient is φ = 74208240.

The previous prime is 156661913. The next prime is 156661927. The reversal of 156661916 is 619166651.

156661916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156661913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030595 + ... + 1030746.

It is an arithmetic number, because the mean of its divisors is an integer number (24048990).

Almost surely, 2^156661916 is an apocalyptic number.

It is an amenable number.

156661916 is a deficient number, since it is larger than the sum of its proper divisors (131925964).

156661916 is a wasteful number, since it uses less digits than its factorization.

156661916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061364 (or 2061362 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 156661916 is about 12516.4657951037. The cubic root of 156661916 is about 539.0815617949.

The spelling of 156661916 in words is "one hundred fifty-six million, six hundred sixty-one thousand, nine hundred sixteen".